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Assessing anxious features in depressed outpatients.

Authors :
McClintock SM
Husain MM
Bernstein IH
Wisniewski SR
Trivedi MH
Morris D
Alpert J
Warden D
Luther JF
Kornstein SG
Biggs MM
Fava M
Rush AJ
Source :
International journal of methods in psychiatric research [Int J Methods Psychiatr Res] 2011 Dec; Vol. 20 (4), pp. e69-82. Date of Electronic Publication: 2011 Nov 04.
Publication Year :
2011

Abstract

Both the 17-item Hamilton Rating Scale for Depression (HRSD(17)) and 30-item Inventory of Depressive Symptomatology - Clinician-rated (IDS-C(30) ) contain a subscale that assesses anxious symptoms. We used classical test theory and item response theory methods to assess and compare the psychometric properties of the two anxiety subscales (HRSD(ANX) and IDS-C(ANX)) in a large sample (N = 3453) of outpatients with non-psychotic major depressive disorder in the Sequenced Treatment Alternatives to Relieve Depression (STAR*D) study. Approximately 48% of evaluable participants had at least one concurrent anxiety disorder by the self-report Psychiatric Diagnostic Screening Questionnaire (PDSQ). The HRSD(ANX) and IDS-C(ANX) were highly correlated (r = 0.75) and both had moderate internal consistency given their limited number of items (HRSD(ANX) Cronbach's alpha = 0.48; IDS-C(ANX) Cronbach's alpha = 0.58). The optimal threshold for ascribing the presence/absence of anxious features was found at a total score of eight or nine for the HRSD(ANX) and seven or eight for the IDS-C(ANX) . It would seem beneficial to delete item 17 (loss of insight) from the HRSD(ANX) as it negatively correlated with the scale's total score. Both the HRSD(ANX) and IDS-C(ANX) subscales have acceptable psychometric properties and can be used to identify anxious features for clinical or research purposes.<br /> (Copyright © 2011 John Wiley & Sons, Ltd.)

Details

Language :
English
ISSN :
1557-0657
Volume :
20
Issue :
4
Database :
MEDLINE
Journal :
International journal of methods in psychiatric research
Publication Type :
Academic Journal
Accession number :
22057975
Full Text :
https://doi.org/10.1002/mpr.353